Home / 5,639.49-7,774.35-3,955.67

Finding the Fourth Proportional to 5,639.49, 7,774.35 and 3,955.67

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Solution

The fourth proportional to 5,639.49, 7,774.35 and 3,955.67 is: 5,453.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639.49 : 7,774.35 = 3,955.67 : x
  2. Step 2: Convert to fraction form
    5,639.49/7,774.35 = 3,955.67/x
  3. Step 3: Cross multiply
    5,639.49x = 7,774.35 × 3,955.67
  4. Step 4: Simplify right side
    5,639.49x = 30,752,738.51
  5. Step 5: Solve for x
    x = 30,752,738.51/5,639.49
  6. Step 6: Final answer
    x = 5,453.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.